Process of making ingots.



4 F. GUTTER. PROCESS 0F MAKING INGOTS. APPLIATION FILED A PR.' 23,1908.

Bgazjy, Patented sepnzg, 1908.

Mr/Essai y y Mm `UNITED sTArEs PATENT oEEIoE.

FRANK CUTTER,

OF PROVIDENCE, RHODE ISLAND.

-PRocEss 0F MAKING Inco'rs.

Specification of 'Letters Patent." Patented Sept. 29, 1908.

Application flied April 23, 190s. serial No'. 428,765.

To-qlZ whom t't-mayconcem: .Be it known that I, FRANK CUTTER, a citizenfof the United States, residing at Provi' dence, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Processes of,

.the contacting surfaces and subject to heat to fuse, the intermediatesolder sheet. Another method` roposed is to sweat the core and shelltogether. That is, rely upon the-fusion of the constituent parts of thecore and shell to unite the same. vN one of these enumerated processeshave been satisfactory, since they all involve a micrometric fit. tingof the core and shell prior to the uniting ste which involves reat .timeand expert ski l'to perform, but le ingot and resulting wire was ruinedby blisters These blisters always result-above an area where air occursbetween the core and shell, by reasonof the uneven flow of solder, or1mperfect grinding of contacting faces, or the contact of an operativesfinger with the surface of the core or shell before'assembling. It hasbeen diflicult to so measure and construct the precious metal shell asto be assured that the thickness of its wall will be uniform throughoutits area. f

ITothe' end essentially of overcoming the above enumerateddisadvantages, and of securing a perfect and uniform product, and at aminimum of expense and labor, my iin-f proved process consists 1n thesteps hereinafter set forth and claimed.

In the drawings which form a part of this specification, Figure 1 is aperspective view Aof-a. base metal core or rod before electrodeposition.Fig. 2 a similar view of the same after the coating or deposit ofrecious metal thereto, Fig. 3, a like view of t 1e completed ingot, andFig; 4, a like View of a holow core.. i

Like reference characters indicate lik parts throughout the views. y

In the drawings, A represents a -rod or core of base metal orcomposition, u on whichI depositby the common metho of electroplatingacoat, layer, skin, or film, B, of

precious metal, such as gold or silver. After the electroplating step itwill be found that m, B, is more or less granular in character, soft,and not sufficiently adhesive to the rod, A, for the purposes ofseamless wire. The rod `with its 'surrounding skin is next treated byimpact, or in other words, it is subjected to beating, pressure, orhammering, which is unifo'rmin force over'the whole area of the rod. ABythis means, the granular character of the deposit, B, is changed, the

film is hardened, its surface is smoothed, and 'a perfect adherence ofthe skin to the rod, B,

secured. A successful method of performing this step is'by forcing orprecipitating shot or other metal objects against the skin, either byayity or machinery. When shot are empyed, I prefer to place the coatedrod in an ordinary rattling barrel or drum contain-K ing shot, androtate the drum; by which' means the desired ends are attained.. A moreolished surface is secured by mixing with the shota liquid soap. If athin plating o f metal is all that is desiredtl1e ingot is now completeand readyfor reduction to seamless wire by any of the usual methods forthat purpose. If a' heavier plate is demanded, the above describedplating and beating steps are repeated.

In constructing ingots intended for reduction nto hollow wire or tubing,so called, the core employed in `my process is of hollow form, as shownin Fig. 4. During the electroplating ste however, it is desirable toclose the ends o' the hollow core, A, by plugs or otherwise. .v I makeno claim to the process of plating flat plates for protecting thecoreagainst moisture, nor broadly to electro-plating. I platesubstantially cylindrical or seamless A mem-bers by impact.'

/Hav'ng described claim is:

1. 'The improved rocess of making cylindrical ingots adapted) tobereducedjto` seamless wire, consisting in depositing' npon a metallicrod by electrolysis a film of another metal, and impactingsimultaneously all parts Aof the metal after it is so deposited upon therod. 1

2. The improved rocess drical ingots adapter to be reduced to seamlesswire, consistlng in depositing upon a rod my process, 'what I vofinferior metal by electrolysls a film of 4ot making cylinprecious metaland impacting simultaneously all parts of the metal after it is sodeposited. upon the rod.

v 3. The improved rocess of making cylin.- dricalingo'ts adapte to bereduced to seamless wire, consisting in depositing upon a less Wire,consisting in depositing upon a me- A tallic rod by electrolysis a ilmof another metal, and precipitating metal objects by impact against thecoated rod. Y -A 5. The improved rocess of making cylindricallingots'adapteg to be reduced to seam'- less Wire2 consisting indepositing upon a me tallic rod by electrolysis a film of another metal,and precipitating metal objects and 'soap by impact againstv the coatedrod. l

6. The improved process of making ingots adapted to be reduced toseamless wire, which consists in depositing upon a core of base metal ailm of another metal and subsequently impacting the outer metalthroughout its entire surface for the pupose specified. In testimonywhereof I have affixed my signature in presence of two witnesses.

FRANK CUTTER.

Witnesses:

HoRATIo E. BELLows, JOSEPH E. BURNS.

